论文标题
循环中的bo带：柔性边界内的自构粒子
Boids in a Loop: Self-Propelled particles within a Flexible Boundary
论文作者
论文摘要
我们从数值上探讨了排斥和对齐自polly的极性颗粒（BOID）的行为，该颗粒（BOID）被压抑的柔性和弹性环形边界所包围的2D。我们观察到无序，极性有序（或堵塞）和循环状态。后者产生了丰富的边界形状，包括：圆，椭圆形，不规则，荷叶边或链轮取决于边界的弯矩以及边界与粒子质量比。除了具有非共同边界的循环状态外，状态类似于吸引自propell的颗粒所表现出的循环状态，但是在这里，狭窄的边界代替了粘性力。当边界上的波速度大约与自构成的粒子的游泳速度匹配时，我们将荷叶边的形成归因于边界上介导的不稳定性。
We numerically explore the behavior of repelling and aligning self-propelled polar particles (boids) in 2D enclosed by a damped flexible and elastic loop-shaped boundary. We observe disordered, polar ordered (or jammed) and circulating states. The latter produce a rich variety of boundary shapes including; circles, ovals, irregulars, ruffles, or sprockets, depending upon the bending moment of the boundary and the boundary to particle mass ratio. With the exception of the circulating states with non-round boundaries, states resemble those exhibited by attracting self-propelled particles, but here the confining boundary acts in place of a cohesive force. We attribute the formation of ruffles to instability mediated by pressure on the boundary when the speed of waves on the boundary approximately matches the self-propelled particle's swim speed.
